<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="../css/18.css">
</head>
<body>
<body>
<div>我是凸起的文字</div>
<div>我是凹下的文字</div>
</body>
</body>
</html>